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J <br />HISTORICAL SUMMARY OF ANALYTICAL RESULTS <br />UNSATURATED ZONE SOIL GAS <br />FOOTHILL SANITARY LANDFILL <br />SG -T <br />Sample Type: Air <br />Sampling Date 2/19/04 5/6/04 7/22/04 11/15/04 2/11/05 10/3/05 6/30/06 11/29/06 3/13/07 8/20/07 1/29/08 7/29/08 1/23/09 7/15/09 3/2/10 <br />Monitorina and Field Parameters <br />Volatile Organic Compounds PPB (v/v) <br />Freon 12 <br />Freon 114 <br />9.9 <br />3.0 <br /><0.5 <br /><0.5 <br />2588 <br />247 <br />5.3 <br /><0.5 <br />2457 <br />186 <br />8.7 <br /><0.5 <br />1800 <br /><0.5 <br />3900 <br /><0.5 <br />700 <br />61 <br />2800 <br />280 <br />2800 <br />240 <br />2300 <br />230 <br />2200 <br />120 <br />1400 <br />90 <br />1600 <br />89 <br />Chloromethane <br />3.3 <br />1.0 <br />43 <br />0.9 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><100 <br /><48 <br /><290 <br /><310 <br />Vinyl Chloride <br />2.4 <br /><0.5 <br />13 <br /><0.5 <br /><0. <br /><0.5 <br /><0.5 <br />340 <br /><0.5 <br />290 <br />420 <br />310 <br />170 <br />120 <br />220 <br />1,3 -Butadiene <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br /><26 <br /><12 <br /><72 <br /><78 <br />Bromomethane <br />2.6 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br />35 <br />35 <br />35 <br /><0.5 <br /><0.5 <br /><0.5 <br /><26 <br /><12 <br /><72 <br /><78 <br />Chloroethane <br />2.6 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br />120 <br /><0.5 <br />150 <br /><12 <br />280 <br />430 <br />Freon 11 <br />Ethanol <br />Freon 113 <br />3.4 <br />NT <br />2.1 <br />0.9 <br />NT <br /><0.5 <br />1483 <br />NT <br />191.0 <br />18 <br />NT <br />0.9 <br />2939 <br />NT <br />238 <br />13 <br />NT <br /><0.5 <br />1000 <br />NT <br /><0.5 <br />2800 <br />NT <br /><0.5 <br />270 <br />NT <br /><0.5 <br />960 <br />NT <br />82 <br />1200 <br />NT <br /><0.5 <br />670 <br /><100 <br />69 <br />600 <br />28000 <br /><12 <br />720 <br /><290 <br /><72 <br />610 <br /><310 <br /><78 <br />-D ch oroethene <br />1.8 <br /><0.5 <br />2.8 <br /><0.5 <br /><0.5 <br />< .5 <br /><0.5 <br /><0.5 <br /><0.5 <br />20 <br /><0.5 <br />91 <br /><12 <br /><72 <br />5 <br />Acetone <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br />550 <br /><48 <br /><290 <br /><310 <br />2 -Propanol <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br /><100 <br /><48 <br /><290 <br /><310 <br />Carbon Disulfide <br />NT <br />NT <br />NT <br />NT <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br />220 <br /><0.5 <br />1200 <br />270 <br /><72 <br /><78 <br />3-Chloropropene <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br /><100 <br /><48 <br /><290 <br /><31 0 <br />Methylene Chloride 16 39.0 3.9 <1.0 8.7 <1.0 <1.0 <1.0 <1.0 180 250 110 77 <72 210 <br />Methyl tert-butyl ether NT NT NT NT NT NT NT NT NT NT NT <26 <12 <72 <78 <br />trans-1,2-Dichloroethene NT NT NT NT NT NT NT NT NT NT NT <26 <12 <72 <78 <br />Hexane <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 230 1000 1100 1100 680 980 630 <br />1 1 _nirh n .fh.n 4 7 en F 1 4 en F 01 en 1; <n J; en r en F 4nn cn F 19 inn A 4An <br />1.1.1 -Trichloroethane 1.8 <0.5 47 2.7 169 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <26 <12 <72 <78 <br />